1 files changed, 0 insertions, 137 deletions
diff --git a/extensions/xfer-hole b/extensions/xfer-hole
deleted file mode 100755
index 91f1be01..00000000
--- a/extensions/xfer-hole
+++ /dev/null
@@ -1,137 +0,0 @@
-#!/usr/bin/env python
-#
-# Send a sparse file more space-efficiently.
-# See recv-hole for a description of the protocol.
-#
-# Note that xfer-hole requires a version of Linux with support for
-# SEEK_DATA and SEEK_HOLE.
-#
-#
-# Copyright (C) 2014-2015  Codethink Limited
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-# =*= License: GPL-2 =*=
-
-
-
-import errno
-import os
-import sys
-
-
-SEEK_DATA = 3
-SEEK_HOLE = 4
-
-
-filename = sys.argv[1]
-fd = os.open(filename, os.O_RDONLY)
-pos = 0
-
-
-DATA = 'data'
-HOLE = 'hole'
-EOF = 'eof'
-
-
-def safe_lseek(fd, pos, whence):
-    try:
-        return os.lseek(fd, pos, whence)
-    except OSError as e:
-        if e.errno == errno.ENXIO:
-            return -1
-        raise
-
-
-def current_data_or_pos(fd, pos):
-    length = safe_lseek(fd, 0, os.SEEK_END)
-    next_data = safe_lseek(fd, pos, SEEK_DATA)
-    next_hole = safe_lseek(fd, pos, SEEK_HOLE)
-
-    if pos == length:
-        return EOF, pos
-    elif pos == next_data:
-        return DATA, pos
-    elif pos == next_hole:
-        return HOLE, pos
-    else:
-        assert False, \
-            ("Do not understand: pos=%d next_data=%d next_hole=%d" %
-             (pos, next_data, next_hole))
-
-
-def next_data_or_hole(fd, pos):
-    length = safe_lseek(fd, 0, os.SEEK_END)
-    next_data = safe_lseek(fd, pos, SEEK_DATA)
-    next_hole = safe_lseek(fd, pos, SEEK_HOLE)
-
-    if pos == length:
-        return EOF, pos
-    elif pos == next_data:
-        # We are at data.
-        if next_hole == -1 or next_hole == length:
-            return EOF, length
-        else:
-            return HOLE, next_hole
-    elif pos == next_hole:
-        # We are at a hole.
-        if next_data == -1 or next_data == length:
-            return EOF, length
-        else:
-            return DATA, next_data
-    else:
-        assert False, \
-            ("Do not understand: pos=%d next_data=%d next_hole=%d" %
-             (pos, next_data, next_hole))
-
-
-def find_data_and_holes(fd):
-    pos = safe_lseek(fd, 0, os.SEEK_CUR)
-
-    kind, pos = current_data_or_pos(fd, pos)
-    while kind != EOF:
-        yield kind, pos
-        kind, pos = next_data_or_hole(fd, pos)
-    yield kind, pos
-
-
-def make_xfer_instructions(fd):
-    prev_kind = None
-    prev_pos = None
-    for kind, pos in find_data_and_holes(fd):
-        if prev_kind == DATA:
-            yield (DATA, prev_pos, pos)
-        elif prev_kind == HOLE:
-            yield (HOLE, prev_pos, pos)
-        prev_kind = kind
-        prev_pos = pos
-
-
-def copy_slice_from_file(to, fd, start, end):
-    safe_lseek(fd, start, os.SEEK_SET)
-    nbytes = end - start
-    max_at_a_time = 1024**2
-    while nbytes > 0:
-        data = os.read(fd, min(nbytes, max_at_a_time))
-        if not data:
-            break
-        to.write(data)
-        nbytes -= len(data)
-    
-
-for kind, start, end in make_xfer_instructions(fd):
-    if kind == HOLE:
-        sys.stdout.write('HOLE\n%d\n' % (end - start))
-    elif kind == DATA:
-        sys.stdout.write('DATA\n%d\n' % (end - start))
-        copy_slice_from_file(sys.stdout, fd, start, end)